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United Launch AllianceAtlas V 551Space Launch Complex 41, Cape Canaveral SFS, FL, USA
Amazon Leo (KA-02)
Launched
June 23, 2025 · 10:54 UTC
Summary
Amazon Leo (KA-02) launched on an United Launch Alliance Atlas V 551 from Space Launch Complex 41, Cape Canaveral SFS, FL, USA on June 23, 2025 at 10:54 UTC. The launch window ran from 10:54 to 11:23 UTC. It was United Launch Alliance's 166th launch, 2nd this year and humanity's 6,987th orbital launch attempt. It was the 16th Atlas V 551 flight and the 2nd this year. The payload was bound for low Earth orbit (LEO). The tracked orbit of Kuiper-00039, one of 27 catalogued objects, from June 26, 2025, was 464 × 476 km inclined 51.9°. 27 objects from this launch are catalogued, all of them payloads.
- Watch
- Rocket Launch: Atlas V Kuiper 2United Launch Alliance
- Watch live: ULA Atlas 5 launches from Cape Canaveral with 27 Kuiper satellites for AmazonSpaceflight Now
- ULA's Atlas V Launches Amazon's Project Kuiper (KA-02)NASASpaceflight
- Booster
- No booster details on record.
- Mission
- Communications · Low Earth Orbit (LEO)for Amazon
- Milestone
- 16th Atlas V 551 flight · 2nd this yearUnited Launch Alliance's 166th launch2nd this yearhumanity's 6,987th orbital launch attempt138th orbital launch attempt this year
Webcast
Flight preview
Simulate in Flight ClubOrbit: as tracked
Kuiper-00039 · NORAD 64500 · 2025-134 · Space-Track · tracking 1 of 27 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2025-134A
- Epoch
- 2025-06-26 20:00:01 UTC
- Mean motion
- 15.34498394 rev/day
- Eccentricity
- 0.0008793
- Inclination
- 51.8706°
- Ascending node
- 314.6903°
- Arg. of perigee
- 123.1442°
- Mean anomaly
- 210.2084°
- Element set
- 999
- Rev at epoch
- 130
- B*
- 0.0018013
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO.
Flight timeline
- T−2.7SIgnition
- T+1SLiftoff
- T+34.6SSupersonic
- T+45.6SMax-Q
- T+1M46.2SBoosters Separation
- T+3M4.8SFairing Separation
- T+4M23.1SBECO
- T+4M29.1SStage 2 Separation
- T+4M39SSES-1
- T+18M14.9SSECO-1
Catalogued objects
27 catalogued: 27 payloads; 26 still in orbit
- Kuiper-00039 · NORAD 64500 · in orbit
- Kuiper-00040 · NORAD 64501 · in orbit
- Kuiper-00041 · NORAD 64502 · in orbit
- Kuiper-00042 · NORAD 64503 · in orbit
- Kuiper-00043 · NORAD 64504 · in orbit
- Kuiper-00044 · NORAD 64505 · in orbit
- Kuiper-00046 · NORAD 64506 · in orbit
- Kuiper-00047 · NORAD 64507 · in orbit
- Kuiper-00048 · NORAD 64508 · in orbit
- Kuiper-00049 · NORAD 64509 · in orbit
- Kuiper-00050 · NORAD 64510 · in orbit
- Kuiper-00051 · NORAD 64511 · in orbit
Show 15 more payloads
- Kuiper-00052 · NORAD 64512 · re-entered March 2, 2026
- Kuiper-00053 · NORAD 64513 · in orbit
- Kuiper-00054 · NORAD 64514 · in orbit
- Kuiper-00055 · NORAD 64515 · in orbit
- Kuiper-00056 · NORAD 64516 · in orbit
- Kuiper-00057 · NORAD 64517 · in orbit
- Kuiper-00058 · NORAD 64518 · in orbit
- Kuiper-00059 · NORAD 64519 · in orbit
- Kuiper-00060 · NORAD 64520 · in orbit
- Kuiper-00061 · NORAD 64521 · in orbit
- Kuiper-00062 · NORAD 64522 · in orbit
- Kuiper-00063 · NORAD 64523 · in orbit
- Kuiper-00064 · NORAD 64524 · in orbit
- Kuiper-00065 · NORAD 64525 · in orbit
- Kuiper-00066 · NORAD 64526 · in orbit
Data from J. McDowell, planet4589.org
About this launch
Amazon Leo, formerly known as Project Kuiper, is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude. 27 satellites are carried on this launch.
Pad
Space Launch Complex 41, Cape Canaveral SFS, FL, USA
116th launch from Space Launch Complex 41, 2nd this year · 1,033rd from Cape Canaveral SFS, FL, USA
Local pad time at liftoff: Jun 23, 6:54 AM EDT, in daylight
125 launches from this pad · 1,131 from Cape Canaveral SFS, FL, USA
55 days after the previous launch from this pad
Updates
Launch success.
Show 9 earlier updates
Liftoff.
Cosmic_Penguin · 6/23/2025 · source
Official Webcast by United Launch Alliance has started
LL2 · 6/23/2025 · source
Updated launch weather, 85% GO.
Cosmic_Penguin · 6/23/2025 · source
Tweaked T-0.
Cosmic_Penguin · 6/23/2025 · source
Updated launch weather, 80% GO.
Cosmic_Penguin · 6/22/2025 · source
GO for launch.
Cosmic_Penguin · 6/21/2025 · source
New launch window.
Cosmic_Penguin · 6/20/2025 · source
Delayed to NET June 23 per new NOTAMs.
Cosmic_Penguin · 6/17/2025 · source
NET June 20 per new marine navigation warnings.
Cosmic_Penguin · 6/17/2025 · source
Questions
When did Amazon Leo (KA-02) launch?
Amazon Leo (KA-02) launched on June 23, 2025 at 10:54 UTC. The launch window ran from 10:54 to 11:23 UTC.
Where can I watch Amazon Leo (KA-02)?
Coverage: Rocket Launch: Atlas V Kuiper 2; Watch live: ULA Atlas 5 launches from Cape Canaveral with 27 Kuiper satellites for Amazon; ULA's Atlas V Launches Amazon's Project Kuiper (KA-02). Watch the replay
What rocket launched Amazon Leo (KA-02)?
Atlas V 551, flown by United Launch Alliance. Atlas V 551 spec sheet
Where did Amazon Leo (KA-02) launch from?
Space Launch Complex 41, Cape Canaveral SFS, FL, USA. Liftoff was Jun 23, 6:54 AM EDT local time at the pad.
What orbit did Amazon Leo (KA-02) reach?
The tracked orbit of Kuiper-00039, one of 27 catalogued objects, from June 26, 2025, was 464 × 476 km inclined 51.9°.
How many satellites did Amazon Leo (KA-02) launch?
27 payloads from this launch are catalogued, 26 of them still in orbit (Data from J. McDowell, planet4589.org).
Which program is Amazon Leo (KA-02) part of?
Amazon Leo. About Amazon Leo